search for: 10gbit

If I could ask question about 10Gbit ethernet.... We have a 70 node cluster built on Centos 5.1, using NFS to mount user home areas. At the moment the network is a bottleneck, and it's going to get worse as we add another 112 CPUs in the form of two blade servers. To help things breath better, we are considering building thre...

We are testing Samba 3 (and 4) on Fedora Core 13, 10Gbit connection with a Mac OS 10.6.4 system as the client. We will be adding some Windows machines sooner or later with 10Gbit interfaces. We are seeing 100-150MBytes/sec read or write performance between the Mac and the FC13 system over 10Gbit interface but it should be capable of 400-500MBytes/sec....

Hello, our server uses 1 GBit Nic and 10 GBit SPF+ NIC. When both nics are configured ONBOOT=yes, then both nics are OK. Wen 1GBit nic is ONBOOT=no, netwerk does not come up. Missing driver? What else? -- Viele Gr??e Helmut Drodofsky Internet XS Service GmbH He?br?hlstra?e 15 70565 Stuttgart Gesch?ftsf?hrung Dr.-Ing. Roswitha Hahn-Drodofsky HRB 21091 Stuttgart USt.ID: DE190582774 Tel.

...en setup(s) running on top of Opterons 4274HE, Opteron > 4200 or Dell R515 machines and is willing to share some experience? Meanwhile, I got myself a two machine test setup for evaluation. 2 machines: - 1x Opteron 4274HE (8C) - 32GByte RAM - 2x 1GBit Eth on board - 1x Intel X520-DA2 (dual port 10GBit Ethernet) I installed Debian squeeze with Xen on both machines. "Debian kernel": 2.6.32-5-amd64 "Debian Xen kernel": 2.6.32-5-xen-amd64 "Debian bpo kernel": 3.2.0-0.bpo.2-amd64 "Debian Xen": 4.0.1 "Vanilla Xen": 4.1.2 TCP/IP transfer test: user@lx...

...5m51.862s user 0m0.862s sys 0m8.334s root at gluster-client:/mnt/gluster_perf_test/ # time rm -rf private_perf_test/ real 0m49.702s user 0m0.087s sys 0m0.958s ## Hosts - 16x Intel(R) Xeon(R) CPU E5-2680 v4 @ 2.40GHz per Gluster host / client - Storage: iSCSI provisioned (via 10Gbit DAC/Fibre), SSD disk, 50K R/RW 4k IOP/s, 400MB/s per Gluster host - Volumes are replicated across two hosts and one arbiter only host - Networking is 10Gbit DAC/Fibre between Gluster hosts and clients - 18GB DDR4 ECC memory ## Volume Info root at gluster-host-01:~ # gluster pool list UUID...

...ot at gluster-client:/mnt/gluster_perf_test/ # time rm -rf private_perf_test/ > > real ? ?0m49.702s > user ? ?0m0.087s > sys ? ?0m0.958s > > > ## Hosts > > - 16x Intel(R) Xeon(R) CPU E5-2680 v4 @ 2.40GHz per Gluster host / client > - Storage: iSCSI provisioned (via 10Gbit DAC/Fibre), SSD disk, 50K R/RW > 4k IOP/s, 400MB/s per Gluster host > - Volumes are replicated across two hosts and one arbiter only host > - Networking is 10Gbit DAC/Fibre between Gluster hosts and clients > - 18GB DDR4 ECC memory > > ## Volume Info > > root at gluster-h...

...ernel, newer xen, newer nfs commons etc) One of virtual servers is a backup server which has mounted a big nfs share from Netapp. It copied changed data on Netapp''s share (we use also excellent Netapp''s snapshot technology to keep older versions data). Our network is mixed 1GBit/10GBit ethernet with junper switch as a central point of network. Internally we use IPv6 protocol. The problem is the following: THE READ PERFORMANCE OF BACKUP SERVER IS DRAMATICALLy LOW: TYPICAL SEQUENTIAL READ FROM NETAPP SHARE FALLS DOWN TO 5-10MBytes/s !!!!!!!!!!!!!!!!!!!!!!! On the other hand WRITE...

Hello, First, thanks for your amazing job ! I used rsync on OSX on a 10Gbit network. Now i move to 50Gbit network but rsync stay to a maximum transfert of 130 MB/s. I believe that the limit comes from the read block size fixed at 256K. Could it be changed to 512K or even to 1 000K to enjoy the maximum bandwidth available? Thanks Guillaume B -------------- next part -----...

Hello Samba Lists: I am trying to read a 22TB file from a system running OpenSuSE 10.3/x64 (Using whatever version of Samba came out with 10.3/x64). The file is on a 30TB XFS volume. I'm connecting over 10GBit Ethernet from a Windows Server 2003/X64 client. If I try to read the 22TB file, I get the message "Access Denied", but if I try to read 100GB files from the same volume, they read with no problems - please help...Note that I'm not trying to write - only read... Lance

Hi, I'm testing a storage system and different network settings and I'm faced with a strange phenomen. Doing a mkfs.ext4 on the centos server lasts 11 minutes. The same mkfs.ext4 command on the debian installation is done in 20 seconds. It is formatting a 14 TB 10Gbit ISCSI Target. It is the same server. Centos and debian are installed on different internal harddisks. Any explanations why debian is so f*** fast? Any hint? Regards . G?tz -- G?tz Reinicke IT-Koordinator Tel. +49 7141 969 82 420 Fax +49 7141 969 55 420 E-Mail goetz.reinicke at filmakademie....

...ot at gluster-client:/mnt/gluster_perf_test/ # time rm -rf private_perf_test/ > > real ? ?0m49.702s > user ? ?0m0.087s > sys ? ?0m0.958s > > > ## Hosts > > - 16x Intel(R) Xeon(R) CPU E5-2680 v4 @ 2.40GHz per Gluster host / client > - Storage: iSCSI provisioned (via 10Gbit DAC/Fibre), SSD disk, 50K R/RW > 4k IOP/s, 400MB/s per Gluster host > - Volumes are replicated across two hosts and one arbiter only host > - Networking is 10Gbit DAC/Fibre between Gluster hosts and clients > - 18GB DDR4 ECC memory > > ## Volume Info > > root at gluster-ho...

Hello, I''m using a server with 10Gbps network interfaces and 4 CPUs, running several domUs. The problem is that in this setup, with high network load, dom0 turns out to be the bottleneck, using only a single CPU which is saturated and 100%. So the network speed is bounded to much less than 10Gbps. How could I make dom0 use more CPUs in parallel ? I checked my VCPU setup; i have 4 VCPUs

Hello. We are using gpxelinux from SYSLINUX 4.02. We recently purchased some HP Proliant BL460c G6 servers with Broadcom BCM 57711 10Gbit NICS. We have a very simple pxelinux.gpxe script compiled into gpxelinux.0: #!gpxe set use-cached 1 dhcp net0 chain http://webserver/gpxe/gpxe.php?IP=${net0/ip} The PHP script dynamically creates a config file that looks something like this: #!gpxe set 209:string pxelinux.cfg/default set 210:st...

...erfs 3.10.5 32GB Ram 36 drive array on LSI raid Sustained >2.5GB/s to XFS (164TB) Speed tests are done with local with single thread (dd) or 4 threads (iozone) using my standard 64k io size to 20G or 5G files (20G for local drives, 5G for gluster) files. Servers have Intel X520-DA2 dual port 10Gbit NICS bonded together with 802.11ad LAG to a Quanta LB6-M switch. Iperf throughput numbers are single stream >9000Mbit/s Here is my current gluster performance: Single brick on server 1 (server 2 was similar): Fuse mount: 1000MB/s write 325MB/s read Distributed only servers 1+2: Fuse mount...

...MB/s The options I use are: rsync -aHAXxv --numeric-ids --progress -e "ssh -T -c arcfour -o Compression=no -x" If I copy files by smb to/from the servers I do get 60 - 80 MB/s, a dd (r/w) on the storages attached gives 90 MB/s on the 1Gbit ISCSI (Source Server) and up to 600MB/s on the 10Gbit ISCSI (Destination Server) storage. Both servers have plenty of memory and cpu usage looks low. Currently we dont use jumbo frames. Network over all usage is moderate to low. There are no special sysctl tweeks yet in use. As mentioned, I'm confused that even with SMB I do get 3 to 4 times be...

Hi! I am building a KVM cluster that needs VM live migration. My shared storage as well as the KVM hosts will be running CentOS. Because 10 Gbps Ethernet switches are very expensive at the moment I will connect the KVM hosts to the storage by cross-over cables and create private networks for each connection (10.0.0.0/30 and 10.0.0.4/30). The following diagram shows the topology Management

...eservers as our requirements changed over time. The "main" problem we are faced with is, that with smb (windows 7 and OS X) clients we never get really close to GBit speed on reads or writes. Using the same servers/storages with ftp, ssh, rsync, nfs we are on the max. of GBit or with the 10Gbit Storage/server on the max of the storage we currently own. (about 400MB/s) E.g. from my Mac Pro I get smb r/w +- 40MB/s, with ftp I get 90MB/s on a 1Gbit Server. So I try to eliminate some bottle necks. But where are they? I know there are some protocol overheads etc. comparing smb and e.g. ftp....

...results did not improve. Moreover, I have tested all the suggested optimization hacks/parameters with little change in the results. A little more insight on the setup: we have 24 HD machines, with dual Xeon CPUs, 16GByte of RAM, working over an Areca RAID card, using JBOD, all boxes connected via 10Gbit/s Infiniband. The CPUs are far from being maxed out (top reports around 50% idle), as is the network. I'm using CentOS 5.5 on all the machines. Let me know if you need more information on what's going on (configuration files, setup, etc, etc). Thanks in advance, Daniel ?????????????????...

...rray on LSI raid > Sustained >2.5GB/s to XFS (164TB) > > Speed tests are done with local with single thread (dd) or 4 threads > (iozone) using my standard 64k io size to 20G or 5G files (20G for local > drives, 5G for gluster) files. > > Servers have Intel X520-DA2 dual port 10Gbit NICS bonded together with > 802.11ad LAG to a Quanta LB6-M switch. Iperf throughput numbers are single > stream >9000Mbit/s > > Here is my current gluster performance: > > Single brick on server 1 (server 2 was similar): > Fuse mount: > 1000MB/s write > 325MB/s read &...

...r-client:/mnt/gluster_perf_test/ # time rm -rf > private_perf_test/ > > real ? ?0m49.702s > user ? ?0m0.087s > sys ? ?0m0.958s > > > ## Hosts > > - 16x Intel(R) Xeon(R) CPU E5-2680 v4 @ 2.40GHz per Gluster host / > client > - Storage: iSCSI provisioned (via 10Gbit DAC/Fibre), SSD disk, 50K > R/RW 4k IOP/s, 400MB/s per Gluster host > - Volumes are replicated across two hosts and one arbiter only host > - Networking is 10Gbit DAC/Fibre between Gluster hosts and clients > - 18GB DDR4 ECC memory > > ## Volume Info > > root at gluster-h...